Hitachi creates 100GB Blu-ray disc
- Posted October 6th, 2007 at 09:28 EDT by
- 6,379 views
- 60 Comments
Hitachi has recently completed a four-layer Blu-ray disc that can store up to 100GB worth of information.
The company has also stated that with a simple firmware update, all Blu-ray players on the market should be able to read these new higher capacity discs.
This announcement comes not long after the HD DVD camp received preliminary approval for a 51GB three layer disc, which features 1GB more than the current BDs.
It is very unlikely that any movies will make their way onto these new quad layer discs, as 100GB is much more space that is needed. Also, until these larger discs become mass-produced, it will be much cheaper for movie companies to make two disc sets. Games, however, may benefit from this move, as space is the biggest limiting factor right now.
Stay tuned for all the latest updates on Blu-ray as they become available.
Source: afterdawn.com
Comments
-
Muzikguy |
Muzikguy- 11:16am BST - October 7th, 2007
- 51
There's something I don't understand. I see a few arguments about transfer rates (someone said BD is slow?) From what I know a 1X BD is 36Mbps. That's doesn't seem slow at all to me. Somewhere it was said that BluRay requires 1.5X for movie playback, 54Mbps. That seems pretty fast to me. Am I missing something?
-
-
-
-
-
InfernoReaper |
GrimDarkling- 12:47am BST - October 8th, 2007
- 56
@ Fry-man: It's the same principle as 650 and 700MB CDs. They are the same size just have a different data density, thus more storage. You can cram sectors together as much as you want, as long as you have a laser precise enough to read and write to the sectors.
Click me for a link to laser information.
And has anyone seen the Star Trek collection commercials? 49 DVDs!!! That equals 17.052 single layer Blu-rays, 8.526 dual layer Blu-rays, and 4.263 quad layer Blu-rays. The packaging alone would save enough for the discs!
-
The Cleaner
- 6:29am BST - October 8th, 2007
- 57
Musikguy. Unfortunately some companies list missleading specifications to hide these things. Bluray at 1x is 4.5MB per second and 2x is 9MB per second. Some brochures will list it as Mega bits instead to make the number appear higher IE: muliply the figures I just gave you by 8 hence 1x now appears as 36Mb per second (note the "b" in Mb is no longer a capital letter). If they listed capacity the same way, instead of saying 50GB of storage it would appear as 400Gb (IE: its very missleading). Other more unscrupulous marketeers will go one better and quote Burst transfer rates (54Mb) which is the peak throughput but not sustained....
Bluray 2x offers just 9MB/s which is very slow. The faster DVD-ROM drives have data transfer rates of 20x (that means 20 x 1,350KB/s) which is 27MBs (Or in Bullcrap terms: 216Mbits per second) but you would reasonably expect most users to only have a 12x or 16x capable drives which is about 18MB/s - 20MB/s (160Mb/s) - In fairness the real difference between Bluray or DVD after accounting for rotation & track layout it is pretty safe to say that the fastest Bluray drive is about equal to a 11x or 12x DVD ROM. But considering that a DVD is 9GB and it can transfer data at 20MB per second it will take approximately 7 - 8 minutes to transfer all the content off the DVD and onto a hard drive. But because Bluray has a 50GB capacity and ability to transfer at only 9MB per second how long will it take? Too long - this is why data & performance must increase in direct proportion.
-
-
-
Advertisement